3652 search results - page 641 / 731 » A study of query length |
176
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SIGMOD
2006
ACM
16 years 1 days ago
2006
ACM
Rapid advancements in positioning systems and wireless communications enable accurate tracking of continuously moving objects. This development poses new challenges to database te...
199
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SIGMOD
2005
ACM
16 years 1 days ago
2005
ACM
Complex queries over high speed data streams often need to rely on approximations to keep up with their input. The research community has developed a rich literature on approximat...
SIGMOD
2004
ACM
16 years 1 days ago
2004
ACM
We perform a theoretical study of the following queryview security problem: given a view V to be published, does V logically disclose information about a confidential query S? The...
127
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SIGMOD
2003
ACM
16 years 1 days ago
2003
ACM
We consider the problem of approximating sliding window joins over data streams in a data stream processing system with limited resources. In our model, we deal with resource cons...
SIGMOD
2003
ACM
16 years 1 days ago
2003
ACM
Recently, a technique called quotient cube was proposed as a summary structure for a data cube that preserves its semantics, with applications for online exploration and visualiza...